138888853776 has 30 divisors (see below), whose sum is σ = 388695889790. Its totient is φ = 46296284544.

The previous prime is 138888853723. The next prime is 138888853781. The reversal of 138888853776 is 677358888831.

138888853776 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 8 + 88 + 537 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100971417600 + 37917436176 = 317760^2 + 194724^2 .

It is a super-2 number, since 2×138888853776² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 482252821 + ... + 482253108.

Almost surely, 2^138888853776 is an apocalyptic number.

138888853776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138888853776 is an abundant number, since it is smaller than the sum of its proper divisors (249807036014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138888853776 is a wasteful number, since it uses less digits than its factorization.

138888853776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964505943 (or 964505934 counting only the distinct ones).

The product of its digits is 433520640, while the sum is 72.

The spelling of 138888853776 in words is "one hundred thirty-eight billion, eight hundred eighty-eight million, eight hundred fifty-three thousand, seven hundred seventy-six".